Digital Density Meter DA-100

Digital Density / Specific Gravity Meter DA-100
Density / Specific Gravity Meter DA-100

Compact, robust, simple:
The DA-100 is the ideal choice for quick and reliable density and specific gravity determinations. A sturdy metal housing and an extremely simple user guidance makes it a perfect and cost-effective solution for routine quality control in the lab and production environments.

Reliable results
The DA-100 features a built-in solid state thermostat and a detection of the stability of the measured value. After injecting the sample, the instrument automatically waits until the cell has reached the target temperature and indicates the end of the measurement.

Direct display of the results in the desired units
The DA-100 can display the results as density and specific gravity. If required, a formula can be input to automatically convert the result into other units such as degree Baumé, API, Quevenne or Twaddle.

Accurate calibrations
A built-in air pump facilitates quick and complete drying of the measuring cell prior to calibrations.

Quick and easy printout
With an optional printer the results are automatically printed out after each measurement together with the sample number, date, time and the duration of the measurement.


Ergonomic and ecological

The DA-100 saves time and energy:

  • Inject the sample, press the MEAS key, read off the result. A spacious keypad and a straightforward display of the results ensure an easy operation of the instrument and make it an ideal solution for routine quality control.
  • Density meters with a built in solid state thermostat are normally permanently kept turned on during working hours as it takes some time for the cell to reach the target temperature after power on. The DA-100 avoids an unnecessary waste of energy as it has a very low power consumption of 30 watts only.
DA-100 keypad
DA-100: Spacious keypad - straightforward display

Compact automation

The DA-100 density meter comes with a built-in air pump to dry the measuring cell prior to calibration.

With the optional ASU-100 sampling pump the DA-100 can easily be upgraded to a semi automatic density measuring system which does not occupy more bench space than the instrument itself.

ASU-100 sampling pump
DA-100 Density Meter with ASU-100 Sampling Pump


Food and Beverage

  • Fruit juices (Brix)
  • Syrup
  • Beer (Plato)
  • Wine
  • Edible oils
  • Vinegar
  • Salad dressings
  • Milk
  • Cream
  • Soy milk
  • Lactic acid drinks
  • Soy sauce
  • Bouillon
  • Brine

Petroleum and Chemicals

  • Crude oil
  • Light oil
  • Kerosene
  • Gasoline
  • Organic solvents
  • Quenching oils
  • Cutting oils
  • Lubricants
  • Water sol. lubricants
  • Insulating oils
  • Hydraulic oils
  • Metal working oils
  • Rust preventive oils
  • Water sol. quenching oils
  • Antifreeze
  • Ethylene glycol
  • Propylene glycol

Pharmaceuticals, Flavours & Fragrances, Cosmetics

  • Injection solutions
  • Chinese herbal remedy
  • Eyedrops
  • Shampoos
  • Glycerol
  • Hair conditioners
  • Detergents
  • Skin toner
  • Hair tonic
  • Serum
  • Disinfectants
  • Ethyl alcohol
  • Flavors
  • Fragrances
  • Essential oils

Electronics, Surface Treatment,  Power Generation, Transport

  • Plating baths
  • Paints
  • Battery acid

Technical Specifications

Measuring principle Oscillating u-tube  
Supported measuring units Density, Specific Gravity,
User defined unit such as Baumé, Twaddle, Milk Degrees, etc.
Measuring range

Density [g/cm³]

0.000 … 3.000
Temperature range


15 … 40
59 … 104
Limit of error Density [g/cm³]
Temperature [°C]
Resolution Density [g/cm³]
Temperature [°C]
Display LCD, backlit, 16 characters, 2 lines  
Display contents Density, specific gravity, user defined value, selected temperature (°C or °F)  
Sampling Manual by syringe or with optional pump  
Interface RS-232C for printer or PC  
Ambient conditions Temperature
5 … 35 °C
85% RH max. (no condensation)
Power supply AC 100 … 120 or AC 200 … 240 V | 50 Hz  
Power consumption 30 W  
Dimensions 275 (W) x 350 (D) x 165 (H) mm  
Weight approx. 6 kg  



IDP-100 Printer
IDP-100 Printer

IDP-100 Printer

Dot matrix ink printer for GLP compliance.

  • Dot matrix printer with ink ribbon, prints on regular paper (width 57.5 ± 0.5mm).
  • 24 digits, 144 dots per line.
  • Automatic paper end detection - no loss of data!
  • 2 kB internal buffer memory. Advantage: Less time required per measurement, as the instrument does not have to wait until the results are printed out.

Certified Standard Reference Material

Density determination by hydrostatic weighing
Density determination by hydrostatic weighing

Liquid Density Standards




KEM does not only have several decades of experience in producing digital density meter it also has a JCSS (Japan Calibration Service System) Accredited Calibration Laboratory (assessed on JIS Q 17025:2000 (ISO/IEC 17025:1999) where a wide range of certified liquid density standard reference material is produced. KEM has the JCSS accreditation number 0115.

The density of these standards is determined with by hydrostatic weighing using a mono-cristal silicon body (see picture) and is thus directly traceable to recognized national standards. All standards come with a certificate bearing the JCSS symbol which assures their traceability to National Measurement Standards of Japan which are recognized worldwide through the ILAC and APLAC MRA.

Although calibration with air and water is common practice, regular system performance checks using reference standards has benefits with regard to GLP compliance and traceability of the results to recognized national standards.

Density standard reference material
Certified Density Standard Reference Material

Density meters are often used to determine the ethanol content. For this reason, KEM offers a range of certified ethanol / water density standards. The ethanol standards come in three vials of 20 mL each.

Due to their measuring principle, the reading of digital density meters based on an oscillating U-tube is influenced by the viscosity of the measured sample because the oscillation of the U-tube is dampened due to the shear forces that occur in viscous samples. Modern digital density meter can automatically correct for this so called viscosity error. If frequently samples are measured having a viscosity which necessitate a correction of the viscosity error, regular system performance checks using certified density reference material having approximately the same viscosity as the samples should be performed. This is the only way to ensure the viscosity correction of the density meter is working correctly. For this reason KEM is offering certified density standard reference material having different viscosities.


StandardDensity (g/cm³ at 20°C)Limit of error (g/cm³)Ordering number
Water 1) 0.99821  ±0.00003  12-02708-02
Iso-octane 2) 0.691.. ±0.00003  12-03288-02
Dichlorotoluene 2) 1.249.. ±0.00003 12-03289-02
Bromobenzene 2) 1.494.. ±0.00003 12-03290-02
1) two vials of 10 mL 2) two vials of 10 mL (organic solvent | water)
StandardDensity (g/cm³ at 20°C)Limit of error (g/cm³)Ordering number
5% ethanol sol.1) 0.991.. ±0.00003 12-03536
10% ethanol sol.1) 0.985.. ±0.00003 12-03536-01
15% ethanol sol.1) 0.980.. ±0.00003 12-03289-02
20% ethanol sol.1) 0.975.. ±0.00003 12-03536-03
25% ethanol sol.1) 0.970.. ±0.00003 12-03536-04
30% ethanol sol.1) 0.964.. ±0.00003 12-03536-05
35% ethanol sol.1) 0.958.. ±0.00003 12-03536-05
40% ethanol sol.1) 0.948.. ±0.00003 12-03536-07
1) three vials of 20 mL
StandardDensity (g/cm³ at 20°C)Limit of error (g/cm³)Ordering number
Visco Liquid 5 (JCSS Certif.)1) 0.882.. ±0.00003 12-03528
Visco Liquid 20 (JCSS Certif.)1) 0.839.. ±0.00003 12-03528-01
Visco Liquid 50 (JCSS Certif.)1) 0.848.. ±0.00003 12-03528-02
Visco Liquid 100 (JCSS Certif.)1) 0.855.. ±0.00003 12-03528-03
Visco Liquid 200 (JCSS Certif.)1) 0.861.. ±0.00003 12-03528-04
Visco Liquid 500 (JCSS Certif.)1) 0.871.. ±0.00003 12-03528-05
Visco Liquid 2000 (JCSS Certif.)1) 0.879.. ±0.00003 12-03528-06
1) includes two vials of 10 mL, density standard mentioned in the table + density standard water
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